Tag dossier
Badge records tagged with NFC, across Canada, Colombia, Croatia, Denmark, Germany, Ireland, Italy, Taiwan, United States.
JavaScript hackable BLE badge
An open-source hackable JavaScript badge for NodeConf EU 2017 in Kilkenny, built by NearForm around Gordon Williams' Espruino/Puck.js lineage with BLE, LCD, NFC, buttons, CR2032 power, attendee-name programming, code examples, and challenge behavior.
ESP32-C3 electronic badge for Hacking in Parallel
The Hacking in Parallel Berlin attendee badge was an ESP32-C3 electronic badge with RGB LEDs, USB-C Serial/JTAG, battery charging, NFC/I2C storage, SAO/I2C expansion, buttons, and RIOT OS board support.
NFC reader and tag badge pair
A two-badge NFC year: one tag badge using NXP NTAG I2C Plus and one RP2040 reader badge using NXP PN7150 with card-emulation capability.
Taiwanese badge mini-games and card-reader conference pass
HITCON CMT 2023's official events page says the badge was more than an identification badge: card readers and mini-games were placed at booths and around the venue, attendees used their badges to activate and interact with them, and the Activity Team booth provided NFC card readers for hands-on inspection.
RP2040 MicroPython badge with NFC and sensors
An Italian MuHack badge built around an RP2040, MicroPython, addressable LEDs, NFC, sensors, optional ESP32 connectivity, and a public MuHackademy workshop/talk trail.
NFC treasure-hunt and LED badge
The second electronic DORS/CLUC badge, built around NFC tag hunting, badge-to-badge interaction counters, LED-display modes, USB configuration and passthrough behavior, a simple game, open source files, and a public production all-nighter writeup.
Limited Colombian NFC hardware-hacking badge
A conservative Colombian DragonJARCON 2025 record for an optional electronic hardware badge and a separate DragonJARCON 2025 NFC hacking badge raffle limited to 100 units.
Iowa CH585 RISC-V NFC badge with village-collection CTF
An official BSides Des Moines 2026 badge documented by the iot-pwn bsidesdsm26 repository as a WCH CH585 RISC-V board with an integrated ISO 14443A NFC reader, four SK6812 RGBW LEDs, a main control button, audio, and a three-layer CTF with two static flags, an eight-tag village-collection challenge, and a hash-based unlock, for the June 13, 2026 edition in Ankeny, Iowa.
Pre-event Cyber Ægg LoRa mesh badge
A future BornHack badge entry now documented by Badge.Team as Cyber Ægg: an egg-shaped low-power nRF52840/SX1262 LoRa mesh badge with tri-colour e-paper, NFC, QWIIC, USB-C, BornPets, and public Codeberg hardware/firmware links.
Montreal CH32V203 and RP2040 badge by Electronic Cats with LoRa and NFC
A Canadian REcon 2026 official electronic badge by Electronic Cats, documented by the official sponsors page and the public badge-recon-2026 repository as a CH32V203 primary board with an RP2040 daughterboard, an SSD1306 OLED, a Semtech SX1262 915 MHz LoRa radio, an NFC PN7150 daughterboard, four buttons, USB-C, and a rich LoRa radar, chat, flag, NFC flag-hunt, magspoof, and Simon challenge surface.